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Finding the Fourth Proportional to 547,609.59, 820,567.71 and 427,381.47

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Solution

The fourth proportional to 547,609.59, 820,567.71 and 427,381.47 is: 640,411.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,609.59 : 820,567.71 = 427,381.47 : x
  2. Step 2: Convert to fraction form
    547,609.59/820,567.71 = 427,381.47/x
  3. Step 3: Cross multiply
    547,609.59x = 820,567.71 × 427,381.47
  4. Step 4: Simplify right side
    547,609.59x = 350,695,434,134.33
  5. Step 5: Solve for x
    x = 350,695,434,134.33/547,609.59
  6. Step 6: Final answer
    x = 640,411.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.